Hello,

I can't seem to remove the grain particles crazy rotation that's occurring. Im just using the shelf tool as an example, and then copy stamping a load of spheres on to the points, once this is done, I notice the fast spinning of the individual grains. Does any one now how to remove this, and have a move physical rotation reaction to the sim?

I've tried mass, friction but with no effect?

Thanks.

Grains do not have orientation.

Copy Stamp, if missing ‘orient’ attributes, uses the ‘v’, velocity, attribute for the direction. Grains at almost-rest will have small jittering ‘v’ as they settle, this results in the wild varying directions for orientations.

If you want orientation, consider the Bullet-based grains shelf example instead.

Thanks for your reply jlait, that makes sense, but it's also a shame as the grain solver gave me a much better performance, and the ability to use POP force's etc.